Philip Fathom is in his base of operations deep below the Apex harbor, Justice Cove, when he is contacted by Town Cryer; Fishwife was seen in flagrante with someone other than Fathom. Fathom can't decide if he wants Town Cryer to tell him who with and Town Cryer disconnects without telling. Fathom thinks Fishwife is back to her villainous ways.

The Investigateen signal tells Philip Fathom there is trouble in the harbor. It turns out to be Shape Ape. Shape Ape says he's changed since a recent team-up (with someone Fathom knows). Fathom knows lots of people, but apparently refuses to guess Fishwife. Eventually Shape Ape says it's Fishwife. They got married, but then she left him. Fathom explains that's what The Fishwife does. Shape Ape doesn't like what the hero says and activates a machine to flatten the waves of the ocean. Also he captured some Investigateens in a contraption that's filling with water. The ape antagonizes Fathom some more until Town Cryer shows up to gloat to Fathom about stealing the Fishwife, but he's surprised to learn about Shape Ape and the Fishwife's recent team-up. At that moment The Fishwife also shows up.

Investigateen Mayumi criticizes Fishwife's representation of women, who responds by relating her backstory and reveals that, due to an accident, her pheromones make her irresistible to the opposite sex. Fathom gives everyone earplugs and says to put them in their nostrils. No longer under the influence of The Fishwife's pheromones, Town Cryer decides to leave. Shape Ape gives up on flattening the ocean and releases the children.

Fathom and Fishwife apologize to each other, but agree their adversarial relationship was better than their domestic one and decide to go back to that. The Fishwife flees before he is able to send her to the Incarce-atarium.